The system contains a leadscrew connected to a tube with a piston at the end. The load on the piston is 7700 N. The tube has a nut welded to it and the nut moves along the leadscrew in a linear motion. The rotation of the nut is prevented by the guide.    
Assembly Link: https://drive.google.com/drive/folders/1mn9rnC3vXcMxVn9_ZopkvC16tLNzZqEE